A 0065-Kg Tennis Ball Moving to the Right with a Speed

Multiple Choice

A 0.065-kg tennis ball moving to the right with a speed of 15 m/s is struck by a tennis racket, causing it to move to the left with a speed of 15 m/s. If the ball remains in contact with the racquet for 0.020 s, what is the magnitude of the average force exerted on the ball?

A) zero newtons
B) 98 N
C) 160 N
D) 240 N
E) 320 N